Protective cover for portable terminal and method for manufacturing same

Abstract

Provided is a protective cover for a portable terminal, the protective cover including: a cover layer; an adhesive layer that is laminated on an inner surface of the cover layer; and a metal layer that is attached on the adhesive layer to perform an electromagnetic wave shielding function. The protective cover may shield electromagnetic waves generated in a portable terminal, perform an antibacterial function contaminating the portable terminal, and carrying out a DMB receiving antenna function when the metal layer is formed in a DMB reception antenna pattern.

1 . A protective cover for a portable terminal, the protective cover comprising:
 a cover layer;   an adhesive layer that is laminated on an inner surface of the cover layer; and   a metal layer that is attached on the adhesive layer to perform an electromagnetic wave shielding function.   
     
     
         2 . The protective cover according to  claim 1 , wherein the metal layer is made of a conductive metal thin film. 
     
     
         3 . The protective cover according to  claim 1 , wherein the metal layer is made in the form of wires, and the wires are arranged to be perpendicular to each other in a mesh form. 
     
     
         4 . The protective cover according to  claim 1 , wherein the metal layer is made of pure silver or a silver alloy to have an antibacterial function. 
     
     
         5 . The protective cover according to  claim 1 , wherein the metal layer is made of a double metal yarn, wherein the double metal yarn comprises:
 a central metal layer whose strength is higher than silver (Ag) and whose elongation is equal to or higher than Ag; and   an Ag layer that is surrounded on an outer surface of the central metal layer.   
     
     
         6 . The protective cover according to  claim 1 , wherein the metal layer is formed of a conductive ply yarn, the conductive ply yarn comprises:
 a first fiber yarn formed of synthetic or natural fibers;   a metal yarn that is wound in a spiral form on an outer circumferential surface of the first fiber yarn, and has antibacterial property and conductivity; and   at least one strand of a second fiber yarn that is plied with the first fiber yarn on which at least one strand of the metal yarn is wound.   
     
     
         7 . The protective cover according to  claim 6 , wherein the metal yarn is formed of pure silver, an Ag alloy, or other conductive metal. 
     
     
         8 . The protective cover according to  claim 1 , wherein the metal layer is formed in a DMB (Digital Multimedia Broadcasting) receiving antenna pattern to perform a DMB reception antenna function. 
     
     
         9 . The protective cover according to  claim 8 , wherein connection terminals are formed at both ends of the antenna pattern, and the connection terminals are electrically connected to the portable terminal. 
     
     
         10 . The protective cover according to  claim 1 , further comprising a fiber layer that is laminated on the metal layer to protect the metal layer. 
     
     
         11 . The protective cover according to  claim 10 , wherein the metal layer is formed of any one of a silver yarn, a conductive ply yarn, and a double metal yarn, and is woven at a lower side of the fiber layer when weaving the fiber layer. 
     
     
         12 . A protective cover for a portable terminal, the protective cover comprising:
 a cover layer; and   an Ag-nanoweb layer that is laminated on an inner surface of the cover layer and that is formed by electrospinning a spinning solution containing an Ag-nanomaterial.   
     
     
         13 . The protective cover according to  claim 12 , wherein the spinning solution is formed of the Ag-nanomaterial, a polymer material that can be electrospun, and a solvent that are mixed at a predetermined ratio. 
     
     
         14 . The protective cover according to  claim 12 , wherein the spinning solution further comprises a pigment to prevent an oxidation phenomenon of Ag from being externally exposed. 
     
     
         15 . The protective cover according to  claim 12 , further comprising a conductive metal layer to be laminated on an inner surface of the cover layer, wherein the spinning solution containing the Ag-nanomaterial is electrospun on the conductive metal layer so that the Ag-nanoweb layer is laminated on the conductive metal layer. 
     
     
         16 . The protective cover according to  claim 15 , wherein the conductive metal layer is formed of a conductive metal plate. 
     
     
         17 . The protective cover according to  claim 15 , wherein the conductive metal layer is made in the form of wires, and the wires are arranged to be perpendicular to each other in a mesh form. 
     
     
         18 . The protective cover according to  claim 15 , wherein the conductive metal layer is formed of a silver yarn that is made by making pure silver or a silver alloy containing silver in the form of wires in which the wires are arranged to be perpendicular to each other in a mesh form. 
     
     
         19 . A method of manufacturing a protective cover for a portable terminal, the method comprising the steps of:
 preparing a cover layer; and   electrospinning a spinning solution containing an Ag-nanomaterial to thus form an Ag-nanoweb layer laminated on an inner surface of the cover layer.   
     
     
         20 . The method of  claim 19 , wherein a conductive metal layer is further laminated on an inner surface of the cover layer, wherein the spinning solution is electrospun on the conductive metal layer so that the Ag-nanoweb layer is laminated on the conductive metal layer.